Expressions overview - the Manufacture workspace

An expression is a combination of symbols used to define a parameter value. Using expressions, you can define values based on other parameters and conditions. If a value changes, related values are updated automatically.

Expressions are case-sensitive and need to follow a specific format. They may include the following symbols:

• Numbers
• Parameter names
• Conditions, known as an IF statement - to determine an expression value based on the result of one or more conditions.
• Units - to make sure that expressions are calculated correctly. If you don't specify units, then units set in the document are used to calculate expressions.
• Mathematical functions - such as rounding numbers, getting the sine or cosine of a value.

Using auto_parameters to extract information about holes and threads from the Design workspace

If you create a thread or tapped hole in your model in the Design workspace, the information about these features is also available in the Manufacturing workspace. Such information can include:

• Thread size
• Thread profile angle
• Thread direction (left- or right-handed).

This transfer of information enables an accurate representation of the features for manufacturing.

To populate parameter boxes in dialogs with this information, enter parameter names that start with the auto_ prefix. For example, to enter a value of the thread pitch when creating a Thread toolpath, select auto_threadPitch.

Updating your model in the Design workspace results in updating your toolpath data.